Google Identity Platform

Growing an active user base is a top priority for all developers. The
streamlined UX of Google's Identity products help get you more signed-in
users while also strengthening the security of your app. Once your users are
signed in, you can easily deepen your integration with Google's products
like YouTube, Drive, and Contacts. To determine which identity solution is
most appropriate for your project, refer to the table below.

Sign in returning users automatically to your Android app or web
site users on Chrome. Smart Lock will remember your user's password
or whether they signed in through a federated identity provider such
as Facebook or Google.